How to blend a few videos with Echo effect in Premiere Pro CS4? it doesn't work

Hi, i got a video with echo effect on it but when i'm adding a video in the channel above him and trying to blend them in blend mode, i don't see that 2nd video - i can't solve that issue for some reason, is echo effect not allowing another video to blend with?(These 2 videos are blending just fine when the echo effect is taken off)